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Cornerstone · Grades 3–5 Keystones #1 5 October 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 October 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 2⁄7

    Answer: 38⁄35
  2. 2. Algebra Two-step equations

    Solve: 2x - 9 = 7

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 22, 40, 28, 21, 25, 10, 33, 48

    Answer: 28.4

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